//
//  AppDelegate.swift
//  新浪微博
//
//  Created by MaJi on 16/4/6.
//  Copyright © 2016年 MaJi. All rights reserved.
//

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
//        let account = MJUserAccountViewModel.sharedAccount.loadUserInfo()
//        print(account)
        
        window = UIWindow(frame: UIScreen.mainScreen().bounds)
//        let tabBarVc = MJMainTabBarController()
//        window?.backgroundColor = UIColor.whiteColor()
//        window?.rootViewController=tabBarVc
//        1.判断登录哪个跟控制器
        window?.rootViewController = defaultRootViewController()
//        window?.rootViewController = UINavigationController(rootViewController: MJPictureSelectController())
//       2. 添加通知,更改跟控制期,使得需要要控制器里进行根控制器跳转的在这里进行,注意规范:一般的根控制器的跳转都是在Appdelegate内进行
        registerNotification()
//        设置window的根视图
//        window?.rootViewController=MJWelcomeViewController()
        window?.makeKeyAndVisible()
        return true
    }
//    添加通知的观察者
    func registerNotification(){
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "changeRootViewController:", name: MJSwitchRootViewController, object: nil)
    }
//    实现通知的方法
    @objc private func changeRootViewController(n:NSNotification){
        if n.object != nil {
            window?.rootViewController = MJMainTabBarController()
            return
        }
        window?.rootViewController = MJWelcomeViewController()
    }
//    通知结束,移除通知的观察者
    deinit{
        NSNotificationCenter.defaultCenter().removeObserver(self)
    }
//判断一开始登录时,登录哪个跟控制器  是登录欢迎页面,还是登录TabBarControlle
    func defaultRootViewController() -> UIViewController{
        return MJUserAccountViewModel.sharedAccount.userLogin ? MJWelcomeViewController() : MJMainTabBarController()
    }
    
    
    func applicationWillResignActive(application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(application: UIApplication) {
        // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }


}

